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check / check (push) In progress

Details

servewaf answers rproxy's question about each request and takes its report (closes #170 )

`smallwebwaf servewaf` runs today's checks on the visitor's request each
question carries, answers rproxy, and passes nothing to an app. rproxy reports
every request servewaf answered. A report counts an allowed request's bytes and
writes servewaf's second log line. The table holds a copy of what a report
needs, never the request, so a report cannot reach a request being handled.

Judgement call: a question's body is read before any check; over 64 KiB gets 400.
Judgement call: a report's bytes and durations have ceilings, so they cannot overflow.
Judgement call: a `close` disposition for SWWAF_BAN_RESPONSE=close.

Model: opus-5-5

2026-11-04 21:10:03 +00:00

2.2 KiB

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Admin endpoints

The endpoints under /_smallwebwaf/, what each takes and what each answers. "Admin endpoints" in SPEC.md says which checks they go through and how their tokens work. smallwebwaf servewaf answers them at its own address, without those checks (see "servewaf" in SPEC.md).

GET /_smallwebwaf/healthz: 200 and ok, to anyone.
GET /_smallwebwaf/metrics: the metrics, for SWWAF_METRICS_TOKEN (see metrics.md).
GET /_smallwebwaf/bans: every ban held, under bans, each as bans.json lists it. Needs SWWAF_ADMIN_TOKEN, as do the three below.
POST /_smallwebwaf/bans: bans a netblock. The body is a JSON object of netblock, duration and, if you like, reason. netblock is a netblock such as 203.0.113.0/24, or a client's address, which bans its IPv4 netblock (SWWAF_BAN_SCOPE_V4_PREFIX) or its IPv6 group. duration is a duration such as 1h or 7d, or permanent. A bad body is answered 400, saying what is wrong:
- one that is not such an object, or has another field;
- one longer than 4 KiB;
- one that names an IPv4-mapped netblock, or an address with a zone.
DELETE /_smallwebwaf/bans/<client>: lifts every active ban covering the address <client>. It answers 404 when none is active.
GET /_smallwebwaf/clients/<ip>: what smallwebwaf knows of the client. Under client, its counters and history as clients.json holds them, or null when clients.json does not hold it. Under bans, every ban covering the address, with its notes.

Examples

With SWWAF_ADMIN_TOKEN set, and the token in $TOKEN:

# Every ban.
curl -H "Authorization: Bearer $TOKEN" https://app.example/_smallwebwaf/bans

# Ban 203.0.113.0/24 for seven days.
curl -H "Authorization: Bearer $TOKEN" \
    --json '{"netblock": "203.0.113.0/24", "duration": "7d", "reason": "probes for logins"}' \
    https://app.example/_smallwebwaf/bans

# Lift the bans on 203.0.113.9.
curl -H "Authorization: Bearer $TOKEN" -X DELETE \
    https://app.example/_smallwebwaf/bans/203.0.113.9

# What smallwebwaf knows of 203.0.113.9.
curl -H "Authorization: Bearer $TOKEN" \
    https://app.example/_smallwebwaf/clients/203.0.113.9

2.2 KiB Raw Blame History

Admin endpoints

Examples

2.2 KiB

Raw Blame History